"Bullet to the Head," the latest '80s-style action film hoping to serve as a potential career rejuvenator for its aging star, isn't the kind of movie that I would technically classify as good. The direction is a little sloppy, the acting is, um, competent and the plot and script are best left undiscussed. That being said, it's also the most fun I've had at the theater so far in 2013.